Table 4. Demographic and factor comparisons between failed and success groups in stenting patients.
| Variable | Failed group (n=29) | Success group (n=28) | p-value |
|---|---|---|---|
| Age (y) | 57.90±12.59 | 55.79±15.67 | 0.577a |
| Sex | 1.000b | ||
| Male | 18 (62.1) | 18 (64.3) | |
| Female | 11 (37.9) | 10 (35.7) | |
| MSL (mm) | 13.54±6.25 | 10.46±5.45 | 0.052a |
| SSD (cm) | 108.39±26.24 | 103.24±23.49 | 0.438a |
| MSD (HU) | 809.56±326.92 | 622.89±198.31 | 0.012a |
| SHI (HU) | 225.28±121.47 | 250.96±122.85 | 0.431a |
| Stone location | 0.202b | ||
| Upper | 25 (86.2) | 21 (75.0) | |
| Middle | 1 (3.4) | 5 (17.9) | |
| Lower | 3 (10.3) | 2 (7.1) | |
| Stone laterality | 0.144b | ||
| Right | 12 (41.4) | 17 (58.6) | |
| Left | 17 (58.6) | 11 (39.3) |
Values are presented as mean±standard deviation or number (%).
MSL, maximal stone length; SSD, skin-to-stone distance; MSD, mean stone density; SHI, stone heterogeneity index; HU, Hounsfield units.
a:Based on Student or Welch's two-sample t-tests. b:Based on Pearson chi-square tests with Yates' continuity correction.